1 files changed, 70 insertions, 0 deletions
diff --git a/utils/ctexp_events.c b/utils/ctexp_events.c
new file mode 100644
index 0000000..1df5729
--- /dev/null
+++ b/utils/ctexp_events.c
@@ -0,0 +1,70 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
+
+static int n = 0;
+
+static int
+ct_event_cb(enum nf_conntrack_msg_type type,struct nf_conntrack *ct, void *data)
+{
+	char buf[1024];
+
+	nfct_snprintf(buf, 1024, ct, type, NFCT_O_PLAIN, NFCT_OF_TIME);
+	printf("[CT] %s\n", buf);
+
+	if (++n == 20)
+		return NFCT_CB_STOP;
+
+	return NFCT_CB_CONTINUE;
+}
+
+static int
+exp_event_cb(enum nf_conntrack_msg_type type,struct nf_expect *exp, void *data)
+{
+	char buf[1024];
+
+	nfexp_snprintf(buf, 1024, exp, type, NFCT_O_DEFAULT, 0);
+	printf("[EXP] %s\n", buf);
+
+	if (++n == 20)
+		return NFCT_CB_STOP;
+
+	return NFCT_CB_CONTINUE;
+}
+
+int main(void)
+{
+	int ret = 0;
+	struct nfct_handle *h;
+
+	h = nfct_open(NFNL_SUBSYS_NONE, NF_NETLINK_CONNTRACK_EXP_NEW |
+					NF_NETLINK_CONNTRACK_EXP_UPDATE |
+					NF_NETLINK_CONNTRACK_EXP_DESTROY |
+					NF_NETLINK_CONNTRACK_NEW |
+					NF_NETLINK_CONNTRACK_UPDATE |
+					NF_NETLINK_CONNTRACK_DESTROY);
+	if (h == NULL) {
+		perror("nfct_open");
+		return -1;
+	}
+
+	nfexp_callback_register(h, NFCT_T_ALL, exp_event_cb, NULL);
+	nfct_callback_register(h, NFCT_T_ALL, ct_event_cb, NULL);
+
+	printf("TEST: waiting for 20 expectation events...\n");
+
+	/* we may use nfexp_catch() instead, it would also work. */
+	ret = nfct_catch(h);
+
+	printf("TEST: expectation events ");
+	if (ret == -1)
+		printf("(%d)(%s)\n", ret, strerror(errno));
+	else
+		printf("(OK)\n");
+
+	nfct_close(h);
+
+	ret == -1 ? exit(EXIT_FAILURE) : exit(EXIT_SUCCESS);
+}